Last week, when Carlos Hyde met the media after reporting to training camp, the 49ers running back sounded half-asleep, or deathly bored, or perhaps both.By the accounts of a few high-ranking members of the organization, Hyde is attacking football, if not his media responsibilities, with great enthusiasm.The 2014 second-round pick is entering his contract year without a 1,000-yard season on his resume, and the 49ers’ new regime has made it clear that an extension isn’t imminent.[...] Hyde, who has had zero competition in his first two seasons as a starter, will have to prove his worth to general manager John Lynch and head coach Kyle Shanahan.Lynch and Shanahan have added competition via free agency (Tim Hightower), the draft (Joe Williams) and trade (Kapri Bibbs), and also added undrafted rookie Matt Breida.At the combine, Lynch said he thought Hyde, who rushed for 988 yards and averaged 4.6 yards a carry last season, had “a lot more in him” and “we’re excited to pull that out of him.”I think (running backs coach) Bobby Turner is a master at this.During the 49ers’ five-week break before training camp, Hyde stayed in the Bay Area and worked with conditioning coach Ray Wright.Hyde has missed 14 of the 49ers’ past 34 games due to injuries to his ankle, foot, shoulder and knee.“He started making a move, just his work ethic and just his attention to detail, about halfway through (organized team activities), which we were really excited about. when we broke camp earlier on in the offseason,” Shanahan said.During the offseason, Hyde went to Shanahan and asked why he wasn’t part of a special-teams unit, which is grunt work not done by starting NFL running backs.